[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/JKAS.2003.36.3.097

COSMOLOGICAL APPLICATIONS OF MULTIPLY IMAGED GRAVITATIONAL LENS SYSTEMS

PARK MYEONG-GU (Department of Astronomy and Atmospheric Sciences, Kyungpook National University)

Publication Information

Journal of The Korean Astronomical Society / v.36, no.3, 2003 , pp. 97-103 More about this Journal

Abstract

We now have more than 70 multiple image gravitational lens systems. Since gravitational lensing occurs through gravitational distortions in cosmic space, cosmological informations can be extracted from multiple image systems. Specifically, Hubble constant can be determined by the time delay mea-surement, curvature of the universe can be measured by the distribution of image separations in lens systems, and limits on matter density and cosmological constant can be set by the statistics of gravitationallens systems. Uncertainties, however, still exist in various steps, and results may be taken with some caution. Larger systematic survey and better understanding of galaxy properties would definitely help.

Keywords

cosmology: observations; cosmology: miscellaneous; galaxies: general; gravitational lensing; quasars: general;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

Reference
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